Youanmi dose rate grid geodetic

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid.This Youanmi dose rate grid geodetic has a cell size of 0.00063 degrees (approximately 65m) and shows the terrestrial dose rate of the Youanmi, WA, 1999. The data used to produce this grid was acquired in 1999 by the WA Government, and consisted of 17233 line-kilometres of data at 400m line spacing and 80m terrain clearance.辐射测量法（又称伽马能谱法）通过探测地球表面附近的伽马射线自然变化，量化由钾（K）、铀（U）及钍（Th）天然放射性衰变产生的辐射响应。所采集的数据将通过标准化流程处理，确保记录的辐射响应仅来自地下岩石的天然辐射。经处理得到的数据集可通过解译，揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核查，以确保GA发布的最终数据满足使用需求。地面剂量率网格通过滤波后的钾、铀、钍网格的线性组合生成。对该网格应用低通滤波器，即可得到滤波后的地面剂量率网格。本尤安米大地测量剂量率网格的单元尺寸为0.00063度（约65米），展示了1999年西澳大利亚州（WA）尤安米地区的地面剂量率分布。用于生成该网格的数据由西澳大利亚州（WA）政府于1999年采集，总测线长度达17233线公里，测线间距为400米，传感器地形离地高度为80米。